Josh Bernstein, the wide-brim-hat wearing, khaki-clad host of the History Channel’s hit television show “Digging for the Truth,” is chastising me. Skeptical, I am questioning the likelihood of a Manhattan-bred Conservative Jew’s expertise in outdoor survival.

“You know, at one point, we were all competent wilderness travelers,” he says good-naturedly. “I just reverted to an old-school Jewish lifestyle.”

But these days his lifestyle is quite hectic. On this Friday afternoon in New York, Bernstein, 35, has some rare down time. Having recently completed the eight-month-long shoot of the show’s third season, he is gearing up for a book tour.

In his new book, “Digging for the Truth: One Man’s Epic Adventure Exploring the World’s Greatest Archaeological Mysteries,” Bernstein goes behind the scenes, sharing “so much more than what you see during the 47 minutes of the show.” He also dispenses practical adventure advice: Like for those inclined to build shelter in the snow, he provides instruction on “How to Build a Quinzhee (snow shelter).”

And lest anyone think his globetrotting job is all glamour, Bernstein even writes about his lack of sleep, the itchy spider bites and the strange intestinal parasites he has picked up on location.

So while his televised search for archeological adventure has brought comparisons to the movie hero Indiana Jones, his real-life story is more wandering Jew.

Born and raised in New York City, his fascination with travel, adventure and history were fostered early on. He attended the elite Horace Mann School, went to summer camp in New Hampshire and Antigua and attended Hebrew school at Park Avenue Synagogue — though only until his bar mitzvah.

“I think that was the goal,” he says sheepishly, before confirming the end of his early Jewish education with his twin brother, Andy.

But perhaps the most pivotal, life-changing event happened six weeks before his 15th birthday, with the sudden death of his Israeli-born father. The following year, his 3-year-old sister was killed in a car accident.

These personal tragedies sent Bernstein on what he describes as a “tailspin of disconnect from Horace Mann.” The grieving teenager headed to Cody, Wyo., where he learned to ride horses, build log cabins and appreciate the West. He also became well acquainted with the school that would define him for the next 18 years: the Boulder Outdoor Survival School, or BOSS.

With its “know more, carry less” philosophy of a sustainable lifestyle, BOSS had a profound influence. Bernstein became proficient in fending for himself, in the wilderness and in life.

After graduating from Horace Mann in 1989, he attended Cornell University with a double major in anthropology and psychology and a double minor in Native American and Near Eastern Studies.

He also found time to be a two-term president of his fraternity and president of a Greek Honor Society. Today, he is still in touch with his fraternity brothers, who, he laughingly admits, “watch the show and give me crap about it.”

At the end of his senior year at Cornell, Bernstein asked a professor where he could study Judaica for learning’s sake alone. The professor told him about the Pardes Institute in Jerusalem — “where people come to ask big questions about Judaism.”

Soon after, Bernstein was off to Jerusalem. At Pardes, he sometimes spent 12 hours a day delving into ancient Jewish texts. So satisfying was the experience, when his year of study was up, Bernstein paid a visit to the Jewish Theological Seminary in New York to see if rabbinical school might be his next move.

“But the fluorescent lights ruined it for me,” he explains. “I told the rabbis at Pardes I’m going to get my wisdom in the desert.” Their reply: “It was good enough for the Patriarchs.”

Instead, Bernstein moved to Colorado and persuaded BOSS’s then-owner to take him on as an unpaid marketing director. In time, his entrepreneurial flair and knack for vertical integration paid off. By 26, he was BOSS’s president, CEO and chief media spokesperson.

Charming yet guarded, Bernstein is most animated when discussing the third season of “Digging for the Truth,” which debuted with a two-hour premier in January.

“We’ve really outdone ourselves this time, I think we found our stride,” he says.

And this season viewers can also look forward to two episodes on topics of biblical interest. Both “The Lost Treasures of the Copper Scroll” and “Search for King David” are set to air this year.

“We went everywhere [in Israel], from Kiryat Shmona in the north to Eilat in the south. No stone went unturned in the Holy Land,” he further explains.

Despite its success, the long-term future of “Digging for the Truth” seems, at present, unclear. Yet one thing is certain; Josh Bernstein will remain an adventurer.